3+7x=3x+x

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Solution for 3+7x=3x+x equation: 



3+7x=3x+x

We move all terms to the left:

3+7x-(3x+x)=0

We add all the numbers together, and all the variables

7x-(+4x)+3=0

We get rid of parentheses

7x-4x+3=0

We add all the numbers together, and all the variables

3x+3=0

We move all terms containing x to the left, all other terms to the right

3x=-3

x=-3/3

x=-1

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